Morphological characteristics of Cistanche tubulosa extract

Tall herbs, 40-160 cm tall, mostly underground.

The stem is unbranched or has 2-4 branches from the Cistanche tubulosa extract part, with a diameter of 5-10 (- 15) cm at the lower part, and gradually slender upward, with a diameter of 2-5 cm.

Leaves broadly ovate or triangular ovate, 0.5-1.5 cm long and 1-2 cm wide, densely distributed in the lower part of the stem, sparsely and narrowed in the upper part, lanceolate or narrowly lanceolate, Synephrine Hcl and 0.5-1 cm wide, glabrous on both sides. Inflorescence spicate, 15-50 cm long, 4-7 cm in diameter; lower part or all bracts of inflorescence are longer, equal to or slightly longer than corolla, ovate lanceolate, lanceolate or linear lanceolate, together with bracteoles and corolla lobes, sparsely pilose or subglabrous outside and margin; bracteoles 2, ovate lanceolate or lanceolate, as long as or slightly longer than Flax lignans.

Calyx campanulate, 1-1.5 cm long, apex 5-lobed, lobes suborbicular, 2.5-4 mm long, 3-5 mm wide. Corolla tubular bell shaped, 3-4 cm long, 5-lobed tip, lobes nearly semicircular, 4-6 mm long, 0.6-1 cm wide, margin often slightly curled, color variation, yellowish white or lavender, often brown after drying. There are 4 stamens, filaments attached 5-6 mm from the base of tube, 1.5-2.5 cm long, base wrinkled villous, anther long ovate, 3.5-4.5 mm long, densely villous, base with cuspidate.

Ovary elliptic, Capsicum Oleoresin, with nectary at base, style slightly longer than stamen, glabrous, stigma subglobose. Capsule ovoid, 1.5-2.7 cm long, 1.3-1.4 cm in diameter, often with persistent style at nape, 2-petal dehiscence. Seeds elliptic or subovate, ca. 0.6-1 mm long, outer reticulate, glossy. The flowering period is from May to June, and the fruit period is from June to August.